The players began the campaign as life-long residents of Thrayorb village, a hunting and primitive agrarian community. As such, it was reasonable to assume they has some knowledge of the area immediately surrounding the settlement. I provided them with this map at the start of the campaign. Each hex is 2 miles. So far, they've not done much to add to the map in their travels. That will likely come back to haunt them in the future.
The wind always blows from "Windward," pushing the regular rain clouds in the direction of "Stormend." The rest of the compass is self-explanatory. It's hardly world-shaking creativity, but I hope it conveys the primitive level of society the PCs are products of, while remaining easy for the players to mentally translate and remember.